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        data-chapter-title="第六节：command指令"
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                        Introduction
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                            <b>1.</b>
                        
                        第一章：小程序前奏
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                            <b>1.1.</b>
                        
                        第一节：认识小程序
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                            <b>1.2.</b>
                        
                        第二节：准备工作
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                            <b>1.3.</b>
                        
                        第三节：开发工具介绍
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                            <b>1.4.</b>
                        
                        第六节：WXSS语法
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                            <b>2.</b>
                        
                        第二章：小程序基础
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                            <b>2.1.</b>
                        
                        第一节：项目结构
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                            <b>2.2.</b>
                        
                        第二节：配置
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                            <b>2.3.</b>
                        
                        第三节：WXML语法
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                            <b>2.4.</b>
                        
                        第五节：事件
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                            <b>2.5.</b>
                        
                        第六节：WXSS语法
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                            <b>2.6.</b>
                        
                        第七节：flex布局
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                            <b>2.7.</b>
                        
                        第八节：APP对象
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                            <b>2.8.</b>
                        
                        第九节：Page对象
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                            <b>2.9.</b>
                        
                        第十节：WXS语法
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                            <b>3.</b>
                        
                        第三章：常用组件
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                            <b>3.1.</b>
                        
                        第一节：scroll-view组件
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                            <b>3.2.</b>
                        
                        第二节：swiper组件
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                            <b>3.3.</b>
                        
                        第三节：movable-view组件
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                            <b>3.4.</b>
                        
                        第四节：icon组件
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                            <b>3.5.</b>
                        
                        第五节：text组件
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                            <b>3.6.</b>
                        
                        第六节：input组件
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        <li class="chapter " data-level="3.7" data-path="di-san-zhang-ff1a-chang-yong-zu-jian/zi-ding-yi-zu-jian.html">
            
                
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                            <b>3.7.</b>
                        
                        自定义组件
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            <span><b>4.</b> 第四章：小程序API</span>
            
            
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                            <b>4.1.</b>
                        
                        第一节：网络请求API
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        <li class="chapter " data-level="5" data-path="di-liu-zhang-ff1a-es6-yu-fa.html">
            
                
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                            <b>5.</b>
                        
                        第五章：ES6语法
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                            <b>5.1.</b>
                        
                        第一节：什么是ES6语法
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        <li class="chapter " data-level="5.2" data-path="di-liu-zhang-ff1a-es6-yu-fa/di-er-jie-ff1a-es6-yu-fa.html">
            
                
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                            <b>5.2.</b>
                        
                        第二节：定义变量
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        <li class="chapter " data-level="5.3" data-path="di-liu-zhang-ff1a-es6-yu-fa/di-san-jie-ff1a-han-shu.html">
            
                
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                            <b>5.3.</b>
                        
                        第三节：函数
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        <li class="chapter " data-level="5.4" data-path="di-liu-zhang-ff1a-es6-yu-fa/di-si-jie-ff1a-lei.html">
            
                
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                            <b>5.4.</b>
                        
                        第四节：类
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                            <b>5.5.</b>
                        
                        第五节：模块
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                            <b>6.</b>
                        
                        第六章：云开发
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                            <b>6.1.</b>
                        
                        第一节：什么是云开发
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                            <b>6.2.</b>
                        
                        第二节：注册微信小程序
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        <li class="chapter " data-level="6.3" data-path="di-san-jie-ff1a-kai-tong-yun-kai-fa.html">
            
                
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                            <b>6.3.</b>
                        
                        第三节：开通云开发
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        <li class="chapter " data-level="6.4" data-path="di-si-jie-ff1a-shu-ju-ku.html">
            
                
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                            <b>6.4.</b>
                        
                        第四节：数据库准备
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        <li class="chapter " data-level="6.5" data-path="di-wu-jie-ff1a-shu-ju-ku-cao-zuo.html">
            
                
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                            <b>6.5.</b>
                        
                        第五节：数据库操作
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        <li class="chapter active" data-level="6.6" data-path="di-liu-jie-ff1a-command-zhi-ling.html">
            
                
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                            <b>6.6.</b>
                        
                        第六节：command指令
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                            <b>6.7.</b>
                        
                        第七节：高级查询
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        <li class="chapter " data-level="6.8" data-path="di-ba-jie-ff1a-wen-jian-shang-chuan.html">
            
                
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                            <b>6.8.</b>
                        
                        第八节：文件操作
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        <li class="chapter " data-level="6.9" data-path="di-jiu-jie-ff1a-node-huan-jing-da-jian.html">
            
                
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                            <b>6.9.</b>
                        
                        第九节：node环境搭建
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        <li class="chapter " data-level="6.10" data-path="di-shi-jie-ff1a-yun-han-shu.html">
            
                
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                            <b>6.10.</b>
                        
                        第十节：云函数
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        <li class="chapter " data-level="6.11" data-path="di-shi-yi-jie-ff1a-yun-han-shu-jian-ce-nei-rong-an-quan.html">
            
                
                    <a href="./di-shi-yi-jie-ff1a-yun-han-shu-jian-ce-nei-rong-an-quan.html">
                
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                            <b>6.11.</b>
                        
                        第十一节：检测内容安全
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        <li class="chapter " data-level="6.12" data-path="di-shi-er-jie-ff1a-yun-han-shu-tu-pian-jian-huang.html">
            
                
                    <a href="./di-shi-er-jie-ff1a-yun-han-shu-tu-pian-jian-huang.html">
                
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                            <b>6.12.</b>
                        
                        第十二节：图片鉴黄
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                            <b>6.13.</b>
                        
                        第十三节：用户授权
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                            <b>6.14.</b>
                        
                        第十四节：其他授权方式
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                        <h1 id="command&#x6307;&#x4EE4;&#xFF1A;">command&#x6307;&#x4EE4;&#xFF1A;</h1>
<h2 id="&#x67E5;&#x8BE2;&#x6307;&#x4EE4;&#xFF1A;">&#x67E5;&#x8BE2;&#x6307;&#x4EE4;&#xFF1A;</h2>
<p>&#x5728;&#x505A;&#x67E5;&#x8BE2;&#x7684;&#x65F6;&#x5019;&#xFF0C;&#x5927;&#x90E8;&#x5206;&#x60C5;&#x51B5;&#x90FD;&#x9700;&#x8981;&#x505A;&#x4E00;&#x4E9B;&#x6761;&#x4EF6;&#x67E5;&#x8BE2;&#x3002;&#x5728;&#x4E91;&#x5F00;&#x53D1;&#x63D0;&#x4F9B;&#x7684;<code>API</code>&#x4E2D;&#xFF0C;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;<code>db.command</code>&#x6765;&#x5B9E;&#x73B0;&#x3002;&#x4EE5;&#x4E0B;&#x5C06;&#x8BB2;&#x89E3;&#x8FD9;&#x4E9B;&#x6307;&#x4EE4;&#x7684;&#x64CD;&#x4F5C;&#xFF1A;</p>
<h3 id="commandeq&#xFF1A;">command.eq&#xFF1A;</h3>
<p>&#x67E5;&#x8BE2;&#x7B5B;&#x9009;&#x6761;&#x4EF6;&#xFF0C;&#x8868;&#x793A;&#x5B57;&#x6BB5;&#x7B49;&#x4E8E;&#x67D0;&#x4E2A;&#x503C;&#x3002;<code>eq</code>&#x6307;&#x4EE4;&#x63A5;&#x53D7;&#x4E00;&#x4E2A;&#x5B57;&#x9762;&#x91CF; (literal)&#xFF0C;&#x53EF;&#x4EE5;&#x662F;<code>number</code>,<code>boolean</code>,<code>string</code>, <code>object</code>,<code>array</code>, <code>Date</code>&#x3002;</p>
<p>&#x6BD4;&#x5982;&#x60F3;&#x8981;&#x83B7;&#x53D6;&#x4F5C;&#x8005;&#x662F;<code>&#x5317;&#x4EAC;&#x65E5;&#x62A5;</code>&#x7684;&#x6240;&#x6709;&#x6587;&#x7AE0;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-comment">// &#x7B2C;&#x4E00;&#x79CD;&#x65B9;&#x5F0F;&#xFF0C;&#x76F4;&#x63A5;&#x901A;&#x8FC7;&#x6307;&#x5B9A;&#x7684;&#x6570;&#x636E;&#x67E5;&#x8BE2;&#xFF1A;</span>
db.collection(<span class="hljs-string">&quot;article&quot;</span>).where({
    author: <span class="hljs-string">&quot;&#x5317;&#x4EAC;&#x65E5;&#x62A5;&quot;</span>
});

<span class="hljs-comment">// &#x7B2C;&#x4E8C;&#x79CD;&#x65B9;&#x5F0F;&#xFF0C;&#x901A;&#x8FC7;eq&#x6307;&#x4EE4;&#x67E5;&#x8BE2;&#xFF1A;</span>
<span class="hljs-keyword">const</span> _ = db.command;
db.collection(<span class="hljs-string">&quot;article&quot;</span>).where({
    author: _.eq(<span class="hljs-string">&quot;&#x5317;&#x4EAC;&#x65E5;&#x62A5;&quot;</span>)
});
</code></pre>
<p><code>command.eq</code>&#x4E0E;&#x6307;&#x5B9A;&#x6570;&#x636E;&#x8FD8;&#x662F;&#x6709;&#x533A;&#x522B;&#x7684;&#xFF0C;&#x6BD4;&#x5982;&#x4EE5;&#x4E0B;&#x4E24;&#x4E2A;&#x4F5C;&#x7528;&#x662F;&#x4E0D;&#x4E00;&#x6837;&#x7684;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-comment">// &#x8FD9;&#x79CD;&#x5199;&#x6CD5;&#x8868;&#x793A;&#x5339;&#x914D; stat.publishYear == 2018 &#x4E14; stat.language == &apos;zh-CN&apos;</span>
db.collection(<span class="hljs-string">&apos;articles&apos;</span>).where({
  author: {
    name: <span class="hljs-string">&quot;&#x77E5;&#x4E86;&#x8BFE;&#x5802;&quot;</span>,
    age: <span class="hljs-number">18</span>
  }
})
<span class="hljs-comment">// &#x8FD9;&#x79CD;&#x5199;&#x6CD5;&#x8868;&#x793A; stat &#x5BF9;&#x8C61;&#x7B49;&#x4E8E; { publishYear: 2018, language: &apos;zh-CN&apos; }</span>
<span class="hljs-keyword">const</span> _ = db.command
db.collection(<span class="hljs-string">&apos;articles&apos;</span>).where({
  stat: _.eq({
    name: <span class="hljs-string">&quot;&#x77E5;&#x4E86;&#x8BFE;&#x5802;&quot;</span>,
    age: <span class="hljs-number">18</span>
  })
})
</code></pre>
<h3 id="commandneq&#xFF1A;">command.neq&#xFF1A;</h3>
<p>&#x8868;&#x793A;&#x5B57;&#x6BB5;&#x4E0D;&#x7B49;&#x4E8E;&#x67D0;&#x4E2A;&#x503C;&#xFF0C;&#x548C;<code>db.command.eq</code>&#x76F8;&#x53CD;&#x3002;</p>
<h3 id="commandlt&#xFF1A;">command.lt&#xFF1A;</h3>
<p>&#x8868;&#x793A;&#x5C0F;&#x4E8E;&#x67D0;&#x4E2A;&#x503C;&#x3002;&#x6BD4;&#x5982;&#x67E5;&#x627E;&#x5C0F;&#x4E8E;<code>2019/1/1 00:00:00</code>&#x53D1;&#x5E03;&#x7684;&#x6587;&#x7AE0;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> _ = db.command;
db.collection(<span class="hljs-string">&quot;article&quot;</span>).where({
  pub_date: _.lt(<span class="hljs-keyword">new</span> <span class="hljs-built_in">Date</span>(<span class="hljs-string">&quot;2019/1/1 00:00:00&quot;</span>))
});
</code></pre>
<h3 id="commandlte&#xFF1A;">command.lte&#xFF1A;</h3>
<p>&#x8868;&#x793A;&#x5C0F;&#x4E8E;&#x6216;&#x8005;&#x7B49;&#x4E8E;&#x67D0;&#x4E2A;&#x503C;&#x3002;&#x4E0E;<code>command.lt</code>&#x7C7B;&#x4F3C;&#x3002;</p>
<h3 id="commandgt&#xFF1A;">command.gt&#xFF1A;</h3>
<p>&#x8868;&#x793A;&#x5927;&#x4E8E;&#x67D0;&#x4E2A;&#x503C;&#x3002;&#x4E0E;<code>command.lt</code>&#x7C7B;&#x4F3C;&#x3002;</p>
<h3 id="commandgte&#xFF1A;">command.gte&#xFF1A;</h3>
<p>&#x8868;&#x793A;&#x5927;&#x4E8E;&#x6216;&#x8005;&#x7B49;&#x4E8E;&#x67D0;&#x4E2A;&#x503C;&#x3002;&#x4E0E;<code>command.lte</code>&#x7C7B;&#x4F3C;&#x3002;</p>
<h3 id="commandin&#xFF1A;">command.in&#xFF1A;</h3>
<p>&#x67E5;&#x8BE2;&#x7B5B;&#x9009;&#x6761;&#x4EF6;&#xFF0C;&#x8868;&#x793A;&#x5B57;&#x6BB5;&#x7684;&#x503C;&#x9700;&#x5728;&#x7ED9;&#x5B9A;&#x7684;&#x6570;&#x7EC4;&#x5185;&#x3002;&#x6BD4;&#x5982;&#x67E5;&#x627E;<code>&#x5317;&#x4EAC;&#x65E5;&#x62A5;</code>&#x548C;<code>&#x4ECA;&#x65E5;&#x5934;&#x6761;</code>&#x4E24;&#x4E2A;&#x4F5C;&#x8005;&#x53D1;&#x8868;&#x7684;&#x6587;&#x7AE0;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> _ = db.command;
db.collection(<span class="hljs-string">&quot;article&quot;</span>).where({
  author: _.in([<span class="hljs-string">&apos;&#x5317;&#x4EAC;&#x65E5;&#x62A5;&apos;</span>,<span class="hljs-string">&apos;&#x4ECA;&#x65E5;&#x5934;&#x6761;&apos;</span>])
});
</code></pre>
<h3 id="commandnin&#xFF1A;">command.nin&#xFF1A;</h3>
<p>&#x67E5;&#x8BE2;&#x7B5B;&#x9009;&#x6761;&#x4EF6;&#xFF0C;&#x8868;&#x793A;&#x5B57;&#x6BB5;&#x7684;&#x503C;&#x9700;&#x4E0D;&#x5728;&#x7ED9;&#x5B9A;&#x7684;&#x6570;&#x7EC4;&#x5185;&#x3002;&#x4E0E;<code>command.int</code>&#x7C7B;&#x4F3C;&#x3002;</p>
<h3 id="commandand&#xFF1A;">command.and&#xFF1A;</h3>
<p>&#x67E5;&#x8BE2;&#x6307;&#x4EE4;&#xFF0C;&#x7528;&#x4E8E;&#x8868;&#x793A;&#x903B;&#x8F91; &quot;&#x4E0E;&quot; &#x7684;&#x5173;&#x7CFB;&#xFF0C;&#x8868;&#x793A;&#x9700;&#x540C;&#x65F6;&#x6EE1;&#x8DB3;&#x591A;&#x4E2A;&#x67E5;&#x8BE2;&#x7B5B;&#x9009;&#x6761;&#x4EF6;&#x3002;&#x6BD4;&#x5982;&#x83B7;&#x53D6;&#x53D1;&#x8868;&#x5728;<code>2019/1/1 00:00:00</code>&#x548C;<code>2019/1/1 23:59:59</code>&#x4E4B;&#x95F4;&#x7684;&#x6240;&#x6709;&#x6587;&#x7AE0;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> _ = db.command;
<span class="hljs-comment">// &#x666E;&#x901A;&#x8C03;&#x7528;&#xFF1A;</span>
db.collection(<span class="hljs-string">&quot;article&quot;</span>).where({
  pub_date: _.and(_.gte(<span class="hljs-keyword">new</span> <span class="hljs-built_in">Date</span>(<span class="hljs-string">&quot;2019/1/1 00:00:00&quot;</span>)),_.lte(<span class="hljs-keyword">new</span> <span class="hljs-built_in">Date</span>(<span class="hljs-string">&quot;2019/1/1 23:59:59&quot;</span>)))
});
<span class="hljs-comment">// &#x94FE;&#x5F0F;&#x8C03;&#x7528;&#xFF1A;</span>
db.collection(<span class="hljs-string">&quot;article&quot;</span>).where({
  pub_date: _.gte(<span class="hljs-keyword">new</span> <span class="hljs-built_in">Date</span>(<span class="hljs-string">&quot;2019/1/1 00:00:00&quot;</span>)).and(_.lte(<span class="hljs-keyword">new</span> <span class="hljs-built_in">Date</span>(<span class="hljs-string">&quot;2019/1/1 23:59:59&quot;</span>)))
});
</code></pre>
<h3 id="commandor&#xFF1A;">command.or&#xFF1A;</h3>
<p>&#x67E5;&#x8BE2;&#x6307;&#x4EE4;&#xFF0C;&#x7528;&#x4E8E;&#x8868;&#x793A;&#x903B;&#x8F91; &quot;&#x6216;&quot; &#x7684;&#x5173;&#x7CFB;&#xFF0C;&#x8868;&#x793A;&#x9700;&#x540C;&#x65F6;&#x6EE1;&#x8DB3;&#x591A;&#x4E2A;&#x67E5;&#x8BE2;&#x7B5B;&#x9009;&#x6761;&#x4EF6;&#x3002;&#x6216;&#x6307;&#x4EE4;&#x6709;&#x4E24;&#x79CD;&#x7528;&#x6CD5;&#xFF0C;&#x4E00;&#x662F;&#x53EF;&#x4EE5;&#x8FDB;&#x884C;&#x5B57;&#x6BB5;&#x503C;&#x7684; &#x201C;&#x6216;&#x201D; &#x64CD;&#x4F5C;&#xFF0C;&#x4E8C;&#x662F;&#x4E5F;&#x53EF;&#x4EE5;&#x8FDB;&#x884C;&#x8DE8;&#x5B57;&#x6BB5;&#x7684; &#x201C;&#x6216;&#x201D; &#x64CD;&#x4F5C;&#x3002;</p>
<ol>
<li><p>&#x4E00;&#x4E2A;&#x5B57;&#x6BB5;&#x7684;&#x6216;&#x64CD;&#x4F5C;&#xFF08;&#x6BD4;&#x5982;&#x83B7;&#x53D6;&#x65F6;&#x95F4;&#x5728;2019/1/1 00:00:00&#x524D;&#x6216;&#x8005;2019/1/1 23:59:59&#x540E;&#x53D1;&#x8868;&#x7684;&#x6587;&#x7AE0;&#xFF09;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> _ = db.command;
db.collection(<span class="hljs-string">&quot;article&quot;</span>).where({
 pub_date: _.or(_.lt(<span class="hljs-string">&quot;2019/1/1 00:00:00&quot;</span>),_gt(<span class="hljs-keyword">new</span> <span class="hljs-built_in">Date</span>(<span class="hljs-string">&quot;2019/1/1 23:59:59&quot;</span>)))
});
</code></pre>
</li>
<li><p>&#x8DE8;&#x5B57;&#x6BB5;&#x6216;&#x64CD;&#x4F5C;&#xFF08;&#x6BD4;&#x5982;&#x60F3;&#x8981;&#x83B7;&#x53D6;&#x65F6;&#x95F4;&#x5728;2019/1/1&#x524D;&#xFF0C;&#x6216;&#x8005;&#x662F;&#x6807;&#x9898;&#x4E2D;&#x5305;&#x542B;&#x77E5;&#x4E86;&#x8BFE;&#x5802;&#x7684;&#x6587;&#x7AE0;&#xFF09;&#xFF1A;</p>
<pre><code class="lang-js"> <span class="hljs-keyword">const</span> _ = db.command;
 db.collection(<span class="hljs-string">&quot;article&quot;</span>).where(
   _.or([{
     pub_date: _.lt(<span class="hljs-keyword">new</span> <span class="hljs-built_in">Date</span>(<span class="hljs-string">&quot;2019/1/1 00:00:00&quot;</span>))
   },{
     title: <span class="hljs-regexp">/&#x77E5;&#x4E86;&#x8BFE;&#x5802;/</span>
   }])
 );
</code></pre>
</li>
</ol>
<hr>
<h2 id="&#x66F4;&#x65B0;&#x6307;&#x4EE4;&#xFF1A;">&#x66F4;&#x65B0;&#x6307;&#x4EE4;&#xFF1A;</h2>
<h3 id="commandset&#xFF1A;">command.set&#xFF1A;</h3>
<p>&#x66F4;&#x65B0;&#x6307;&#x4EE4;&#x3002;&#x7528;&#x4E8E;&#x8BBE;&#x5B9A;&#x5B57;&#x6BB5;&#x7B49;&#x4E8E;&#x6307;&#x5B9A;&#x503C;&#x3002;&#x6BD4;&#x5982;&#x4EE5;&#x4E0B;&#x662F;&#x4E00;&#x4E2A;&#x6587;&#x7AE0;&#x7684;&#x6570;&#x636E;&#xFF1A;</p>
<pre><code class="lang-js">{
  <span class="hljs-string">&quot;title&quot;</span>: <span class="hljs-string">&quot;abc&quot;</span>,
  <span class="hljs-string">&quot;content&quot;</span>: <span class="hljs-string">&quot;111&quot;</span>,
  <span class="hljs-string">&quot;author&quot;</span>: {
    <span class="hljs-string">&quot;name&quot;</span>: <span class="hljs-string">&quot;&#x77E5;&#x4E86;&#x8BFE;&#x5802;&quot;</span>,
    <span class="hljs-string">&quot;age&quot;</span>: <span class="hljs-number">18</span>
  }
}
</code></pre>
<p>&#x5982;&#x679C;&#x6211;&#x60F3;&#x5C06;&#x8FD9;&#x4E2A;&#x6587;&#x7AE0;&#x4E2D;&#x7684;<code>author</code>&#x53D8;&#x6210;<code>{&quot;name&quot;:&quot;&#x77E5;&#x4E86;&#x8BFE;&#x5802;&quot;}</code>&#xFF0C;&#x90A3;&#x4E48;&#x901A;&#x8FC7;&#x4F20;&#x7EDF;&#x7684;&#x65B9;&#x5F0F;&#x662F;&#x65E0;&#x6CD5;&#x5B9E;&#x73B0;&#x7684;&#xFF1A;</p>
<pre><code class="lang-js">db.collection(<span class="hljs-string">&quot;article&quot;</span>).doc(<span class="hljs-string">&quot;id&quot;</span>).update({
  data: {
    author: {
      <span class="hljs-string">&quot;name&quot;</span>: <span class="hljs-string">&quot;&#x77E5;&#x4E86;&#x8BFE;&#x5802;&quot;</span>
    }
  }
})
</code></pre>
<p>&#x4E0A;&#x9762;&#x8FD9;&#x79CD;&#x65B9;&#x5F0F;&#xFF0C;&#x53EA;&#x662F;&#x5C06;<code>author.name</code>&#x8BBE;&#x7F6E;&#x4E3A;<code>&#x77E5;&#x4E86;&#x8BFE;&#x5802;</code>&#xFF0C;&#x5E76;&#x6CA1;&#x6709;&#x5C06;<code>author</code>&#x7684;&#x503C;&#x8BBE;&#x7F6E;&#x4E3A;<code>{name:&quot;&#x77E5;&#x4E86;&#x8BFE;&#x5802;&quot;}</code>&#xFF0C;&#x4E5F;&#x5C31;&#x662F;&#x8BF4;&#xFF0C;<code>age:18</code>&#x8FD9;&#x4E2A;&#x503C;&#x4F9D;&#x7136;&#x5728;<code>author</code>&#x4E2D;&#x5B58;&#x5728;&#x3002;&#x8FD9;&#x65F6;&#x5019;&#x5C31;&#x9700;&#x8981;&#x901A;&#x8FC7;<code>set</code>&#x6765;&#x5B9E;&#x73B0;&#x4E86;&#x3002;&#x793A;&#x4F8B;&#x4EE3;&#x7801;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> _ = db.command;
db.collection(<span class="hljs-string">&quot;article&quot;</span>).doc(<span class="hljs-string">&quot;id&quot;</span>).update({
  data: {
    author: _.set({
      <span class="hljs-string">&quot;name&quot;</span>: <span class="hljs-string">&quot;&#x77E5;&#x4E86;&#x8BFE;&#x5802;&quot;</span>
    })
  }
})
</code></pre>
<h3 id="commandremove&#xFF1A;">command.remove&#xFF1A;</h3>
<p>&#x66F4;&#x65B0;&#x6307;&#x4EE4;&#x3002;&#x7528;&#x4E8E;&#x8868;&#x793A;&#x5220;&#x9664;&#x67D0;&#x4E2A;&#x5B57;&#x6BB5;&#x3002;&#x6BD4;&#x5982;&#x6211;&#x4EEC;&#x60F3;&#x5C06;<code>author</code>&#x8FD9;&#x4E2A;&#x5B57;&#x6BB5;&#x5220;&#x9664;&#xFF0C;&#x90A3;&#x4E48;&#x5C31;&#x53EF;&#x4EE5;&#x8C03;&#x7528;&#x8FD9;&#x4E2A;&#x65B9;&#x6CD5;&#x3002;&#x793A;&#x4F8B;&#x4EE3;&#x7801;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> _ = db.command;
db.collection(<span class="hljs-string">&quot;article&quot;</span>).doc(<span class="hljs-string">&quot;id&quot;</span>).update({
  data: {
    author: _.remove()
  }
})
</code></pre>
<h3 id="commandinc&#xFF1A;">command.inc&#xFF1A;</h3>
<p>&#x66F4;&#x65B0;&#x6307;&#x4EE4;&#x3002;&#x7528;&#x4E8E;&#x6307;&#x793A;&#x5B57;&#x6BB5;&#x81EA;&#x589E;&#x67D0;&#x4E2A;&#x503C;&#xFF0C;&#x8FD9;&#x662F;&#x4E2A;&#x539F;&#x5B50;&#x64CD;&#x4F5C;&#xFF0C;&#x4F7F;&#x7528;&#x8FD9;&#x4E2A;&#x64CD;&#x4F5C;&#x6307;&#x4EE4;&#x800C;&#x4E0D;&#x662F;&#x5148;&#x8BFB;&#x6570;&#x636E;&#x3001;&#x518D;&#x52A0;&#x3001;&#x518D;&#x5199;&#x56DE;&#x7684;&#x597D;&#x5904;&#x662F;&#xFF1A;</p>
<ol>
<li>&#x539F;&#x5B50;&#x6027;&#xFF1A;&#x591A;&#x4E2A;&#x7528;&#x6237;&#x540C;&#x65F6;&#x5199;&#xFF0C;&#x5BF9;&#x6570;&#x636E;&#x5E93;&#x6765;&#x8BF4;&#x90FD;&#x662F;&#x5C06;&#x5B57;&#x6BB5;&#x52A0;&#x4E00;&#xFF0C;&#x4E0D;&#x4F1A;&#x6709;&#x540E;&#x6765;&#x8005;&#x8986;&#x5199;&#x524D;&#x8005;&#x7684;&#x60C5;&#x51B5;&#x3002;</li>
<li>&#x51CF;&#x5C11;&#x4E00;&#x6B21;&#x7F51;&#x7EDC;&#x8BF7;&#x6C42;&#xFF1A;&#x4E0D;&#x9700;&#x5148;&#x8BFB;&#x518D;&#x5199;&#x3002;</li>
</ol>
<p>&#x6BD4;&#x5982;<code>article</code>&#x8FD9;&#x4E2A;&#x96C6;&#x5408;&#x4E2D;&#x7684;&#x4E00;&#x6761;&#x6570;&#x636E;&#x6709;&#x4E00;&#x4E2A;<code>read_count</code>&#x5B57;&#x6BB5;&#xFF0C;&#x60F3;&#x7ED9;&#x8FD9;&#x4E2A;&#x5B57;&#x6BB5;&#x52A0;1&#xFF0C;&#x90A3;&#x4E48;&#x53EF;&#x4EE5;&#x4F7F;&#x7528;&#x4EE5;&#x4E0B;&#x65B9;&#x5F0F;&#x5B9E;&#x73B0;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> _ = db.command
db.collection(<span class="hljs-string">&apos;article&apos;</span>).doc(<span class="hljs-string">&apos;id&apos;</span>).update({
  data: {
    read_count: _.inc(<span class="hljs-number">1</span>)
  }
})
</code></pre>
<h3 id="commandmul&#xFF1A;">command.mul&#xFF1A;</h3>
<p>&#x81EA;&#x4E58;&#x6307;&#x4EE4;&#xFF0C;&#x8DDF;<code>command.inc</code>&#x4E00;&#x6837;&#x3002;</p>
<h3 id="commandpush&#xFF1A;">command.push&#xFF1A;</h3>
<p>&#x66F4;&#x65B0;&#x6307;&#x4EE4;&#xFF0C;&#x5BF9;&#x4E00;&#x4E2A;&#x503C;&#x4E3A;&#x6570;&#x7EC4;&#x7684;&#x5B57;&#x6BB5;&#xFF0C;&#x5F80;&#x6570;&#x7EC4;&#x5C3E;&#x90E8;&#x6DFB;&#x52A0;&#x4E00;&#x4E2A;&#x6216;&#x591A;&#x4E2A;&#x503C;&#x3002;&#x6216;&#x5B57;&#x6BB5;&#x539F;&#x4E3A;&#x7A7A;&#xFF0C;&#x5219;&#x521B;&#x5EFA;&#x8BE5;&#x5B57;&#x6BB5;&#x5E76;&#x8BBE;&#x6570;&#x7EC4;&#x4E3A;&#x4F20;&#x5165;&#x503C;&#x3002;<br>&#x6BD4;&#x5982;&#x8981;&#x7ED9;<code>article</code>&#x96C6;&#x5408;&#x4E2D;&#x7684;&#x67D0;&#x6761;&#x6570;&#x636E;&#x6DFB;&#x52A0;&#x6807;&#x7B7E;&#xFF0C;&#x90A3;&#x4E48;&#x53EF;&#x4EE5;&#x4F7F;&#x7528;&#x4EE5;&#x4E0B;&#x65B9;&#x5F0F;&#x6765;&#x5B9E;&#x73B0;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> _ = db.command
db.collection(<span class="hljs-string">&apos;article&apos;</span>).doc(<span class="hljs-string">&apos;id&apos;</span>).update({
  data: {
    tags: _.push([<span class="hljs-string">&apos;&#x65B0;&#x95FB;&apos;</span>])
  }
})
</code></pre>
<h3 id="commandpop&#xFF1A;">command.pop&#xFF1A;</h3>
<p>&#x66F4;&#x65B0;&#x6307;&#x4EE4;&#xFF0C;&#x5BF9;&#x4E00;&#x4E2A;&#x503C;&#x4E3A;&#x6570;&#x7EC4;&#x7684;&#x5B57;&#x6BB5;&#xFF0C;&#x5C06;&#x6570;&#x7EC4;&#x5C3E;&#x90E8;&#x5143;&#x7D20;&#x5220;&#x9664;&#x3002;</p>
<h3 id="commandshift&#xFF1A;">command.shift&#xFF1A;</h3>
<p>&#x66F4;&#x65B0;&#x6307;&#x4EE4;&#xFF0C;&#x5BF9;&#x4E00;&#x4E2A;&#x503C;&#x4E3A;&#x6570;&#x7EC4;&#x7684;&#x5B57;&#x6BB5;&#xFF0C;&#x5C06;&#x6570;&#x7EC4;&#x5934;&#x90E8;&#x5143;&#x7D20;&#x5220;&#x9664;&#x3002;</p>
<h3 id="commandunshift&#xFF1A;">command.unshift&#xFF1A;</h3>
<p>&#x66F4;&#x65B0;&#x6307;&#x4EE4;&#xFF0C;&#x5BF9;&#x4E00;&#x4E2A;&#x503C;&#x4E3A;&#x6570;&#x7EC4;&#x7684;&#x5B57;&#x6BB5;&#xFF0C;&#x5F80;&#x6570;&#x7EC4;&#x5934;&#x90E8;&#x6DFB;&#x52A0;&#x4E00;&#x4E2A;&#x6216;&#x591A;&#x4E2A;&#x503C;&#x3002;&#x6216;&#x5B57;&#x6BB5;&#x539F;&#x4E3A;&#x7A7A;&#xFF0C;&#x5219;&#x521B;&#x5EFA;&#x8BE5;&#x5B57;&#x6BB5;&#x5E76;&#x8BBE;&#x6570;&#x7EC4;&#x4E3A;&#x4F20;&#x5165;&#x503C;&#x3002;</p>

                    
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